there is some small hair line cracks around the exhaust inlet of my turbo. Do these affect performance? are they a problem? will my turbo eventually crack more and "fall apart"?

two are outward from the inlet hole and one is across the bridge between the two inlets.

 

if you can hear a sound....yes you will lose performance

 

Cracks are pretty normal in turbos this old. They arent great to have, but I havent heard of anyone ever having a chunk fall off and go into the turbo.

 

say what u want but its been a few months now and my friend used J w weld i think the stuff is called and hes turbo is still fine try it out what 10 dollars .

 

j b weld im sorry .

 

A few small cracks are normal. They are caused by the high exhaust temps. However, if they extend more then about half an inch and look like they might compromise the structure (or cause an exhaust leak) then they might become a problem. It is not recommended to have them welded up. Replace the turbine housing.

 

Cracks are alright unless they are in danger of causing a piece of the metal to fall off - I've seen it.&nbsp JB Weld will NOT hold up under the exhaust heat - you might damage the turbo using that stuff in there.

Once the metal cracks, there is very little chance it'll crack more.&nbsp Those cracks are due to stress during casting - they usually crack once and stay like that.


-Ted